期刊文献+

地震预警信息可靠度研究 被引量:8

Reliability research of earthquake early warning information
下载PDF
导出
摘要 提出了一种地震预警信息可靠度检验方法.针对地震预警系统对信息的高度时效性及准确性要求,并结合其应用特点,从地震动记录信噪比、特征参数相容性、特征参数协调性及地震预警定位结果可靠性等4个方面对地震预警信息的综合可靠度进行探讨,并分别提出了相应的可靠度定量计算方法.利用日本KiK-net台网记录的444个地震事件共4 737条三分向加速度记录对上述4个指标参数及综合可靠度指标参数的验证结果表明,采用本方法有助于提高地震预警信息发布的准确性和可靠性,减少"漏报"及"误报"事件的发生. The earthquake early warning system (EEWs)has highly require-ments for information’s timeliness and accuracy.In this paper,we proposed an information reliability test method for EEWs.Based on the EEWs’application features,this paper proposed four information reliability tests,which are signal to noise ratio (SNR)test,characteristic parameters (such asτc and Pd )compat-ibility test,characteristic parameters coordination test and EEW location relia-bility test.For each test,a quantitative calculation formula is defined,and then the reliability of the entire information can be calculated.4 737 three-component acceleration records of 444 seismic events from KiK-net in Japan were used in order to test and verify the applicability of our method.The results show that, by taking the reliability tests method proposed in this paper,the accuracy and reliability of the EEW information are improved,and then “missed alarms”or“false alarms”are reduced.
作者 张红才 金星
出处 《地震学报》 CSCD 北大核心 2014年第4期615-630,2,共16页 Acta Seismologica Sinica
基金 国家科技支撑项目(2014BAK03B02)资助
关键词 地震预警 信噪比 相容性 协调性 earthquake early warning signal to noise ratio compatibility coor-dination
  • 相关文献

参考文献37

二级参考文献212

共引文献247

同被引文献54

引证文献8

二级引证文献29

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部